Hello from Brazil Chiris Brady! I fly the 737NG for GOL Airlines in brazil. Your website, since the begining of the Ground school (almost 3 years ago) was a great help for me and the others pilots. I'm here to thank you for everything and say congratz for the amazing work!
@ChrisBrady7373 жыл бұрын
Hi Eduardo, thank you for your kind words, I am glad it was all helpful. Maybe consider getting the book, it has even more information. Fly safe, Chris
@jasonbourne14513 жыл бұрын
Without any price, it is good to reach these videos captain :) Because you know in aviation, generally you need money to have those kind of videos :D
@ChrisBrady7373 жыл бұрын
Thanks Jason, As you can see I do not do this for the money but if you want to make a small donation then please buy a copy of my book. www.blurb.co.uk/b/10415699-the-boeing-737-technical-guide
@midfield2142 ай бұрын
Thank you so much for the hard work and care given for each video. A treasure vault for b737 newbies! Book has been purchased!
@ChrisBrady7372 ай бұрын
You are welcome, thanks for watching and for getting a copy of the book 🙏
@neekoweeclearwater2305 Жыл бұрын
Thanks for breaking it down into something simple and digestible
@ChrisBrady737 Жыл бұрын
You are very welcome
@Dodidi953 жыл бұрын
Thank you very much Captain Brady - Great video! It has really helped me devlop my knowledge further of the Boeing 737 Electrical System and I know other pilots will equally find these presentations helpful. Best wishes and thanks once again for all the hard work you are putting into the videos and your website.
@ChrisBrady7373 жыл бұрын
It is my pleasure. I am happy to put something back into aviation as it has given me so much
@Wings797 Жыл бұрын
Hi Capt Brady, first I would like to appriciate and gratitude to your great video, as an airline pilot , I was trained in Boeing field Renton Seatle in year 2000 for B737 300 but now I got many more deeper with your video , thank you.
@ChrisBrady737 Жыл бұрын
Thank you for your kind comments. I am pleased to hear that you are enjoying my videos.
@barendalberts46022 күн бұрын
Awesome content. Thank you for sharing this.
@ChrisBrady73720 күн бұрын
No problem, glad you found it useful
@kenlennon5 ай бұрын
As an electrical engineer, that was an impressive presentation.
@ChrisBrady7375 ай бұрын
Thank you, high praise indeed. Glad you enjoyed it.
@inusaibrahimg.53553 жыл бұрын
Thank You So Very Much Cpt Chris Brady always with you !!
@ChrisBrady7373 жыл бұрын
You are very welcome
@edw1212 жыл бұрын
Very nice video Chris, I'm busy prepping for another LPC. Blue Skies to you!
@ChrisBrady7372 жыл бұрын
My pleasure, good luck
@ThePilot_USA3 жыл бұрын
Amazing amount of info. Just a quick correction at 39:37 The blue light GEN OFF BUS means the IDG is not powering the Transfer Bus. The respective generator can be running or not. The blue light APU GEN OFF BUS definition is correct. APU running but generator not powering the Transfer bus. The blue GRD POWER AVAILABLE means external power is connected and the quality is OK. Cheers..
@ChrisBrady7373 жыл бұрын
You are absolutely correct
@dezerter862 жыл бұрын
Dear Captain Brady! Thank you so much for all of your amazing work! It is extremally helpfull! I am a visual person so whenever I can see a picture of a certain device it helps me to understand it better. All the best!
@ChrisBrady7372 жыл бұрын
Thank you for your kind comments. It is always rewarding to hear when people find my work helpful.
@michiel65963 жыл бұрын
Great stuff Captain Brady…complicated as it looks but made easy. Use it to prepare for Sim training and upcoming FAA check. Thanks!
@ChrisBrady7373 жыл бұрын
Thanks for your kind comments, I really appreciate it. More videos are in the pipeline!
@telescope643 жыл бұрын
Very thorough!Thanks Chris!
@ChrisBrady7373 жыл бұрын
Thanks for all your help with it!
@successkim7920 Жыл бұрын
i cannot thank you more for this
@ChrisBrady737 Жыл бұрын
My pleasure, glad you like the videos.
@MarcoAlioli Жыл бұрын
Hello there! I would like to thank you for your videos, they are excellent and they are helping me a lot preparing for the CU! Thanks a lot!
@ChrisBrady737 Жыл бұрын
My pleasure, glad you found them useful.
@elmin2323 Жыл бұрын
GOLD standard mate as always! just about to start line training and these video's are great! If your even in Australia ill buy you a beer or two..
@ChrisBrady737 Жыл бұрын
Thanks, glad you found them useful. Not sure if I will find myself in Oz but I'd be up for a cold one if I ever do!
@peppr-ovc3 ай бұрын
Hello Chris, I'd like to know why the IFE was turned off at 41:43. Very good video! You're the best source of 737 system guides, how they work etc. keep it going!
@ChrisBrady7373 ай бұрын
Hi, this event happened to me around 15 years ago so I cant remember the full details but the DRIVE light had come on for some reason. I followed the QRH procedure to disconnect the IDG.
@cpuwolf2 жыл бұрын
really like your presentation style. as a software engineer, I'm starting to learn speech skills. Thank you
@ChrisBrady7372 жыл бұрын
Great to hear!
@germanschindler87813 жыл бұрын
Great video, Chris. Thank you!
@ChrisBrady7373 жыл бұрын
Glad you liked it!
@allandunne21503 жыл бұрын
Super video, great recap, many thanks!
@ChrisBrady7373 жыл бұрын
No problem, I hope you enjoy the rest of the videos
@scorpeeno4 ай бұрын
Wonderful! Great video!
@ChrisBrady7374 ай бұрын
You are very welcome, thanks for watching
@HAWK21M Жыл бұрын
Another great video chris….all the best ahead
@ChrisBrady737 Жыл бұрын
Many thanks Meljoe, welcome back to the 737.
@elliottd3232 жыл бұрын
You’re a genius, simply put.
@ChrisBrady7372 жыл бұрын
Thank you, you are too kind.
@awiator753 жыл бұрын
Chris, what a fantastic job you doing, I was looking for such thing for quit some time now... thanks for your efforts a keep up the great job 👍👍👍👍
@ChrisBrady7373 жыл бұрын
My pleasure, glad you are finding the videos useful
@BrightonCraig10 ай бұрын
Just come across your videos and great to watch - I guess someone has already mentioned the Phase colours, but if you are old enough (sadly guilty) L1-R L2-Y L3-B are the standard colours used int he UK pre-EU Harmonisation of colours in 2004
@ChrisBrady73710 ай бұрын
Thanks for the clarification. Great to hear that you are enjoying the videos 👍
@carlocatalani24102 жыл бұрын
Thank you very much for this videos....it's amazing 👍👍👍
@ChrisBrady7372 жыл бұрын
My pleasure, please share amongst your colleagues and consider getting the accompanying book.
@iandudman95293 жыл бұрын
Thanks again Chris
@ChrisBrady7373 жыл бұрын
No worries, glad you enjoyed it
@johnmilburn57157 ай бұрын
Interesting vid as usual! The RYB colours are what used to be the UK L1 L2 L3 colours until EU harmonisation. A white earth? Never! 😅
@navsperry9320 Жыл бұрын
You knowledge and content is just amazing 👌👌
@ChrisBrady737 Жыл бұрын
Thank you, you are too kind.
@navsperry9320 Жыл бұрын
@@ChrisBrady737 Your videos really helping me out for my Command prep. Really thankful to you 👏
@ChrisBrady737 Жыл бұрын
@@navsperry9320 My pleasure, glad you are finding them useful. Best of luck with your command.
@jayvete66653 жыл бұрын
Great job
@ChrisBrady7373 жыл бұрын
Thank you, my pleasure
@jesper1010 Жыл бұрын
These videos are the best I've seen on the internet, and watching them also made me buy your book. I have seen every one in the technical series from start to finish. But now when I try to go back to review some of them, I find that even if the sections of the originals and the classics were interesting on my first pass, I tend to skip over them to only get the NG/MAX parts now when I'm trying to learn the systems better. Maybe it would be an idea to also release a cut down series of the systems videos just for the NG/MAX, since I guess that's what most of us are flying nowadays? Maybe it is not too much work either, just some cutting in your video editing software?
@ChrisBrady73711 ай бұрын
Hi Jesper, thanks for your kind words and for buying the book. I took the decision early on to cover each generation, partly for completeness but also partly to show how the systems evolved to where they are today. A case in point is my last video “The Rudder Story” this had its roots in older generations but caused changes in later generations. You are right it would be a relatively easy job to just cut out the Original and Classic info but I think I already concentrate more on the later generations. I won’t rule out your idea but I still need to be persuaded that it would be worth doing. Thanks for the feedback, I appreciate it.
@darthsmack70903 күн бұрын
All this information will be excellent for practicing failures in the home simulator lol.
@ChrisBrady7372 күн бұрын
Home sim, actual sim or the real aircraft
@dploit3 жыл бұрын
Hi Cris Very good video please check the information related of the gen off bus light on the NG/MAX on this video. Warm regards!
@ChrisBrady7373 жыл бұрын
Thanks Damien, I’ll get on it👍
@mosihaghighat24633 жыл бұрын
Amazing 🤩
@ChrisBrady7373 жыл бұрын
You are most welcome
@danstefanescu68993 жыл бұрын
Thank you !
@ChrisBrady7373 жыл бұрын
You're welcome!
@dogguyful2 жыл бұрын
Awesome 👍👍👌👌🙏🙏
@ChrisBrady7372 жыл бұрын
My pleasure
@nicolaslutun63613 жыл бұрын
Very intresting Chris as usual. just a remark/question. at 04:21 I m surprised where you put the red mark; actually on the air starter and not on the CSD for the oil check as you were speaking about. is there a reason or am I mistacken ? anyway great thank you for your work
@ChrisBrady7373 жыл бұрын
You are absolutely correct - I got the wrong sight glass! I think the CSD sight glass was obscured by the orange tag and in my haste I labelled the wrong sight glass. Good spot!
@nicolaslutun63613 жыл бұрын
@@ChrisBrady737 thank you for your answer Chris. it was a detail with no importance really; and more to show you that we watch your videos with great interest . I m looking forward for your next Video ( and use to watch several times the last ones ) . Great work !
@Arcadiez2 жыл бұрын
Is there any fuel penalty for turning off the IDG since rest of the flight will be continued with the APU on? Doesn't state anything in the QRH 6.1 Drive or in the Inflight Performance part in the FCOM (What I can find). Sorry if it's a dumb question, I'm still learning. This video is amazing, even such small details as the 6pin GPU connector, I always wonder what those two smaller pins were for. Thanks again cpt!
@ChrisBrady7372 жыл бұрын
There is no direct fuel penalty for turning off an IDG but of course there will be an associated fuel burn increase for running the APU. This should only be around 100kg/hr.
@Arcadiez2 жыл бұрын
@@ChrisBrady737 Okay roughly 100kg/h. Thanks for the information
@elmin2323 Жыл бұрын
One question on the NG on the metering panel why if you select the BAT BUS or STBY PWR selections it only hows Volts not Amps to?
@ChrisBrady737 Жыл бұрын
They should show both amps and volts with those selections.
@ilarikousa15003 жыл бұрын
Thanks!
@ChrisBrady7373 жыл бұрын
Welcome!
@sampinnto81323 жыл бұрын
Once again amazing video Captain, Thank you.. I have a small question (not sure if I am right). Could we charge the battery onboard the A/C with GPU and Ground service bus?
@sampinnto81323 жыл бұрын
sorry, disregard this question I found the answer..sorry.
@ChrisBrady7373 жыл бұрын
No problem
@godlugner53277 ай бұрын
30:03 "we've been thrown off course by about half a million miles, the bumps you feel are asteroids smacking into the side of the ship, and were currently flying without any navigation" "Miss are you telling us absolutely everything?" "not exactly... We're also out of coffee" *PANIC* Moral of the story: never lose the IFE
@alexroy7772 Жыл бұрын
Supremely helpful videos. Excuse my ignorance but what is typically a BUS? Like a circuit or what? Can you clarify?
@ChrisBrady737 Жыл бұрын
They can take several forms but they are usually metal bars that you connect several other circuits to. If you open up the consumer unit / distribution board in your house you will see some in there for the live, neutral and earth feeds.
@steffenleo59973 ай бұрын
Good Day Capt Brady, Do you step on brake or just move thrust lever to idle N1 @ around 20% when queue on runway to takeoff before get permission to takeoff from ATC?
@ChrisBrady7373 ай бұрын
You need to apply wheel brakes to come to a stop when taxiing.
@philipjones43552 жыл бұрын
Hi Chris first of all thanks for the outstanding videos, I have a question, why are there 2 APU generator switches on the electric panel with only 1 APU generator?
@ChrisBrady7372 жыл бұрын
Thanks Philip, it is so that you can connect to either or both busses.
@aviator50382 жыл бұрын
Hello Chris, thanks for this wonderful video, i have a question, to disconnect IDG physically from flight deck, engine must be running or start lever in IDLE position is enough to do that, thank you.
@ChrisBrady7372 жыл бұрын
"engine must be running" is not specifically a criteria. "start lever in IDLE position" is the criteria - but of course the engine cannot run without the start lever being in the idle position! When you put the Gen Drive Disconnect switch to the disconnect position, power goes to a solenoid on the IDG if the engine start lever is in the idle position. The solenoid energizes and disconnects the CSD from the input drive shaft.
@mattiassjogren28403 жыл бұрын
Excellent video (as all of your other videos)! I have a copy of your book and love it! Just a question, at 38:20 "High oil temperature will not cause the FAULT light to illuminate..", I am confused by which FAULT light you mean? Thank you
@ChrisBrady7373 жыл бұрын
Hi Mattias, Sorry my mistake, I meant the DRIVE light, there is of course no FAULT light.
@mattiassjogren28403 жыл бұрын
@@ChrisBrady737 Thanks for the reply. I thought you meant DRIVE, no prob, we all make mistakes! Congratulations for all your videos, they are excellent.
@b2instructor166 Жыл бұрын
@@ChrisBrady737 Hi, Captain Cris! Thank you for brilliant presentation. But I'd make some correction about this DRIVE light. The logic of this light doesn't diffirentiate between auto or manual disconnect. Only pressure and frequency monitored by GCU to turn on this light. So, even if you have thermal disconnect, the DRIVE light comes on due to low pressure downstream of IDG oil pump or due to generator underfrequency when it slows down. Hope this information will be useful.
@JaneHUANG-o8b16 күн бұрын
May I know where can I find the schematics that is shown at 02:00?
@ChrisBrady73712 күн бұрын
This is taken from my book, The Boeing 737 Technical Guide available here www.b737.org.uk/book.htm
@youtubechannel231df Жыл бұрын
Like!
@ChrisBrady737 Жыл бұрын
You are welcome
@faizunhaziq17222 жыл бұрын
may i know why in maintenance manual, the load shedding for 1 IDG operation is started from galley 2, then galley 1, and followed by both buses, lastly the IFE...
@ChrisBrady7372 жыл бұрын
There are two different sequences of load shedding for the NG depending upon the date of manufacture and SB status. Both sequences are designed for importance, load and bus sequencing.
@zimmimah Жыл бұрын
@Chris Brady Hello! at time 39:48 youve mentioned about what the 3 blue lights. Unfortunately i could not find any reference to this in the FCOM. I was trying to explain the same thing to a colleague but unfortunate couldnt find any source material. Would appreciate your help thanks :)
@ChrisBrady737 Жыл бұрын
FCOM Vol 2 6.10.9 "Ground Power Available (GRD POWER AVAILABLE) Light Illuminated (blue) - ground power is connected and meets airplane power quality standards."
@zimmimah Жыл бұрын
@@ChrisBrady737 yes but that is only about the ground power available. i actually meant about the other 3 blue lights. GEN OFF BUS and APU GEN OFF BUS. I ask this because we have a procedure to check the GEN frequency and AC volts before putting them on bus. Which i believe is an unnecessary step.
@ChrisBrady737 Жыл бұрын
The AMM states "The GENERATOR OFF BUS lights comes on anytime the battery bus has power and the GCB is open. The operation of the GENERATOR OFF BUS lights depends on GCB position only. It is independent of engine operation or IDG output power quality." So, the eng gen off bus lights do not indicate power quality. I would say that checking GEN frequency and AC volts before putting them on bus is unnecessary as the generators will not connect to the bus if they are not of the required quality. The step is not required in any Boeing procedures.
@zimmimah Жыл бұрын
@@ChrisBrady737 Thank you for the prompt reply captain! I love your detailed Videos.
@ChrisBrady737 Жыл бұрын
My pleasure
@pincophr1393 Жыл бұрын
Hello Captain Brady, thank you for your content as always. I have a question that's been bugging me for a while without ever finding an answer. Do you happen to know why the altitude horn sounds when AC power is removed from the aircraft?
@ChrisBrady737 Жыл бұрын
I think you mean the IRS warning horn. This from FCOM Flight Management, Navigation - Navigation Systems Description - IRS Power: "If AC electrical power is subsequently removed from the airplane, the switched hot battery bus continues to supply electrical power to the IRS. The ON DC light illuminates, and the ground-call horn in the nose wheel well sounds to alert maintenance personnel that the IRS is on battery power."
@pincophr1393 Жыл бұрын
@@ChrisBrady737 Thank you Captain for taking the time to answer, appreciate your dedication. I think this video will make myself more clear: kzbin.info/www/bejne/e5-baHagps6LsM0 At approximately 1:40, the engineer disconnects the ground power and what I believe to be the altitude warning horn sounds right after. This is the sound I am referring to. In this instance, the IRSs are off so their related warning horn is not going off, as expected. I hope I managed to convey the message a little better. Wish you a good day!
@ChrisBrady737 Жыл бұрын
OK, I understand now. Unfortunately I have no idea why that happens, sorry!
@MrMR-sk8jm11 ай бұрын
Is this the electrical system in the 737 Max 8? I have a school project for my aircraft systems class
@ChrisBrady73711 ай бұрын
This covers all generations
@JamieHines2 жыл бұрын
My question is ground power related and an airplane design question. I'm a ramp crew chief and I got asked this question by a few of my TikTok followers on a video I did. "Why is the ground power connection on ac right and not left?" I'm not an engineer and don't know how to answer this, do you have an idea? Thanks
@ChrisBrady7372 жыл бұрын
Hi Jamie, All of the aircraft servicing points (GPU, fuel, baggage) are on the right to keep them away from the passengers who always board and disembark from the left.
@rubemarangelo49402 жыл бұрын
Hello Mr Brady!!! Greetings from Brazil!!! It's good to have a such useful knowledge on KZbin!!! I have a question about load shedding: In a single generator situation a load shedding starts automatically once the scenario has been detected right? However, if the System is unable to do that in auto mode, then pilots do by switching the respective switch. Am I right?
@ChrisBrady7372 жыл бұрын
Hi, thanks for your kind comments. Yes if auto load shedding does not occur then manually switching off services like galley and cabin utilities is a good step.
@catchsomerayswithalisonmitchel Жыл бұрын
Have you got a link in which we can download these PowerPoints thanks mate
@ChrisBrady737 Жыл бұрын
Sorry, the presentations are not available for download. Much of the material is available in my book if you want a hard/electronic copy.
@ChrisBrady7375 ай бұрын
@catchsomerayswithalisonmitchel Update, by popular demand I am making a book with all of the presentations from these videos. Expect it out around April/May 2024.
@Vejiita45 Жыл бұрын
Hello. Which devices are using AC?
@ChrisBrady737 Жыл бұрын
Heavy loads, pumps, galley, motors, fans etc. Try this page for an overview www.b737.org.uk/electrics.htm